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{{#Wiki_filter:Baldor Electric Company,,I ,I=,P. 0. Box 250, 4349 Avery Drive.....................
{{#Wiki_filter:Baldor Electric Company
_Flowery Branch, GA 30542 USAA MEMBER OF THE ABB GROUP Tel 678.947.7350 January 20, 2015To: Document Control DeskUnited States Nuclear Regulatory Commission Washington, DC 20555
,,I ,I=,P.                                                               0. Box 250, 4349 Avery Drive
                ..................... _Flowery                               Branch, GA 30542 USA A MEMBER OF THE ABB GROUP                                                             Tel 678.947.7350 January 20,     2015 To:   Document Control Desk United States Nuclear Regulatory Commission Washington, DC 20555


==Dear Sir or Madam:==
==Dear Sir or Madam:==
In accordance with Title 10, Code of Federal Regulations, Part 21,Baldor Electric is making Written and Final Notification asrequired by 10CFR21.21 for event #50703.A. Name and address of the individual informing the NRC.James ThigpenQuality Assurance ManagerBaldor Electric/Gainesville Motor Plant4349 Avery DriveFlowery Branch, Georgia 30506B. Identification of Basic Component being Supplied.
 
AC MotorC. Name of firm supplying basic component.
In accordance with Title 10, Code of Federal Regulations, Part 21, Baldor Electric is making Written and Final Notification as required by 10CFR21.21 for event #50703.
Baldor Electric/Gainesville Motor Plant4349 Avery DriveFlowery Branch, Georgia 30542D. Nature of the defect, deviation, or failure to comply.
A. Name and address of the individual informing the NRC.
James Thigpen Quality Assurance Manager Baldor Electric/Gainesville Motor Plant 4349 Avery Drive Flowery Branch, Georgia                     30506 B. Identification of Basic Component being Supplied.
AC Motor C. Name of firm supplying basic component.
Baldor Electric/Gainesville Motor Plant 4349 Avery Drive Flowery Branch, Georgia 30542 D. Nature of the defect,                     deviation, or failure to comply.


==Subject:==
==Subject:==
Nuclear Nonconformance Event Number 50703 This is a reportable 10CFR21 notification because we believe it is possible that the 9 identified lE motors shipped by Baldor Electric, contain a design where the buildup of tolerances between the shaft journal, bearing cap and bracket could potentially allow the bearing cap to cock in the bracket causing a 0.001" interference fit                    on one side of the cap in a worst case scenario.


Nuclear Nonconformance Event Number 50703This is a reportable 10CFR21 notification because we believeit is possible that the 9 identified lE motors shipped byBaldor Electric, contain a design where the buildup oftolerances between the shaft journal, bearing cap and bracketcould potentially allow the bearing cap to cock in thebracket causing a 0.001" interference fit on one side of thecap in a worst case scenario.
          ----.....                                           Baldor Electric Company 9A LID O0                                             P. 0. Box 250, 4349 Avery Drive Flowery Branch, GA 30542 USA A MEMBER OF THE ABB GROUP                                             Tel 678.947.7350 STEPS TAKEN TO   PREVENT FUTURE OCCURRENCES A review was completed by design engineering to determine this design issue has only occurred for the Baldor Specification ID #'s associated with Howden Part Number 600287-28R, *of which Baldor has only shipped the 10 motors identified below of which 9 remain in the customers possession. Baldor has the remaining motor in our possession and it is being replaced with one using the revised design developed as our corrective action response.
---- ..... Baldor Electric Company9A LID O0 P. 0. Box 250, 4349 Avery DriveFlowery Branch, GA 30542 USAA MEMBER OF THE ABB GROUP Tel 678.947.7350 STEPS TAKEN TO PREVENT FUTURE OCCURRENCES A review was completed by design engineering to determine this design issue has only occurred for the BaldorSpecification ID #'s associated with Howden Part Number600287-28R,  
Baldor has notified Howden North America Inc. Company's Quality Assurance of our findings. They have in turn contacted their customer, PPL Susquehanna, and determined all 9 motors in their possession have been in service for over 24 hours with no problems.
*of which Baldor has only shipped the 10 motorsidentified below of which 9 remain in the customers possession.
The design of the shaft/bearing cap radial clearance has been increased to correct the potential safety issue. Motor Bill of materials for the effected Baldor designs have been revised to call for bearing cap part number 603295-74B on any future shipment.
Baldor has the remaining motor in our possession and it is being replaced with one using the revised designdeveloped as our corrective action response.
CONCLUSION The one motor that failed during initial   customer testing is in process of being repaired or replaced with the new designed bearing cap.
Baldor has notified Howden North America Inc. Company's Quality Assurance of our findings.
The revision of the design for Spec. ID's B505968, B656588, B782464, B952117 and B1092454 has been implemented and verified to be correct.
They have in turncontacted their customer, PPL Susquehanna, and determined all9 motors in their possession have been in service for over 24hours with no problems.
The end user PPL Susquehanna has confirmed to Howden North America Inc. that the remaining 9 motors have been in service for over 24 hours with no problems, and therefore do not require any alteration to the bearing cap in order to perform their intended use safely.
The design of the shaft/bearing cap radial clearance has beenincreased to correct the potential safety issue. Motor Billof materials for the effected Baldor designs have beenrevised to call for bearing cap part number 603295-74B on anyfuture shipment.
D. The Discovery Date.
CONCLUSION The one motor that failed during initial customer testing isin process of being repaired or replaced with the newdesigned bearing cap.The revision of the design for Spec. ID's B505968, B656588,B782464, B952117 and B1092454 has been implemented andverified to be correct.The end user PPL Susquehanna has confirmed to Howden NorthAmerica Inc. that the remaining 9 motors have been in servicefor over 24 hours with no problems, and therefore do notrequire any alteration to the bearing cap in order to performtheir intended use safely.D. The Discovery Date.October 29, 2014.
October 29, 2014.
A MEMBER OF THE ABB GROUPE. The Quantity and Location of Motors Affected.
 
Baldor Electric CompanyP. 0. Box 250, 4349 Avery DriveFlowery Branch, GA 30542 USATel 678.947.7350 PART/COMPONENT NUMBER:Customer Customer Motor Serial # End User / Location StatusName PO #Howden 39679 B505968-010 T1 PPL Susquehanna Contacted North 44617 B656588-010 T1 PPL Susquehanna Todd.Gunvalson@Ho America Inc. B656588-010 T1 PPL Susquehanna wden.com and48105 B782464-010 T1 PPL Susquehanna confirmed all 9 motorsB782464-010 T2 PPL Susquehanna have been running in012747 LIl 1 B952117-010 T1 PPL Susquehanna service for over 24B952117-010 T2 PPL Susquehanna hours with noB952117-010 T3 PPL Susquehanna problems.
Baldor Electric Company P. 0. Box 250, 4349 Avery Drive Flowery Branch, GA 30542 USA A MEMBER OF THE ABB GROUP                                                      Tel 678.947.7350 E. The Quantity and Location of Motors Affected.
022355 B1092454-010 T1 PPL Susquehanna B1092454-010 T2 Baldor Electric Motor will ship toHowden with newdesign, new serialnumberF. The Corrective Action which has been completed.
PART/COMPONENT NUMBER:
Customer     Customer     Motor Serial # End User / Location   Status Name          PO #
Howden       39679       B505968-010 T1 PPL Susquehanna       Contacted North         44617       B656588-010 T1 PPL Susquehanna     Todd.Gunvalson@Ho America Inc.               B656588-010 T1 PPL Susquehanna     wden.com and 48105        B782464-010 T1 PPL Susquehanna       confirmed all 9 motors B782464-010 T2 PPL Susquehanna       have been running in 012747 LIl 1 B952117-010 T1 PPL Susquehanna     service for over 24 B952117-010 T2 PPL Susquehanna       hours with no B952117-010 T3 PPL Susquehanna       problems.
022355       B1092454-010 T1 PPL Susquehanna B1092454-010 T2 Baldor Electric       Motor will ship to Howden with new design, new serial number F. The Corrective Action which has been completed.
Baldor has notified Howden North America's Quality Assurance
Baldor has notified Howden North America's Quality Assurance
.of our findings on the motor returned to Baldor for 10CFR21evaluation.
      .of our findings on the motor returned to Baldor for 10CFR21 evaluation. A review was completed by design engineering to determine this failure was due to a collection of events that occurred simultaneously, and if were to happen again, would result in failure within hours of the motor being powered.
A review was completed by design engineering todetermine this failure was due to a collection of events thatoccurred simultaneously, and if were to happen again, wouldresult in failure within hours of the motor being powered.Baldor's solution to this worst case scenario is to open theclearances of the shaft bore in the cap up from a 0.008"radial clearance by design, to the maximum 0.012" radialclearance for 1.5" fit length for UL XP standards.
Baldor's solution to this worst case scenario is to open the clearances of the shaft bore in the cap up from a 0.008" radial clearance by design, to the maximum 0.012" radial clearance for 1.5" fit     length for UL XP standards.               This would eliminate any possibility of a rub while the cap is mounted in the cap journal of the bracket.       All motors that have been in service for more than 24 hours do not require alteration of the bearing cap. Any others that have not been placed into service should have the opposite drive end bearing cap replaced to ensure this failure will not occur.                 The corrective action CAR-00451 Howden: Request for 10CFR21 Evaluation for bearing lockdown was completed and closed on 12/23/14.
This wouldeliminate any possibility of a rub while the cap is mounted inthe cap journal of the bracket.
Baldor initiated corrective action per Baldor CAR-00451 on December 15, 2014 which was completed and received final approval by James Thigpen QA manager Baldor.             Final verification of actions will be and verified for effectiveness by 3/23/2015.
All motors that have been inservice for more than 24 hours do not require alteration ofthe bearing cap. Any others that have not been placed intoservice should have the opposite drive end bearing capreplaced to ensure this failure will not occur. Thecorrective action CAR-00451 Howden: Request for 10CFR21Evaluation for bearing lockdown was completed and closed on12/23/14.
 
Baldor initiated corrective action per Baldor CAR-00451 onDecember 15, 2014 which was completed and received finalapproval by James Thigpen QA manager Baldor. Finalverification of actions will be and verified for effectiveness by 3/23/2015.
Baldor Electric Company P. 0. Box 250, 4349 Avery Drive Flowery Branch, GA 30542 USA Tel 678.947.7350 A MEMBER OF THE ABB GROUP G. Other Information.
A MEMBER OF THE ABB GROUPBaldor Electric CompanyP. 0. Box 250, 4349 Avery DriveFlowery Branch, GA 30542 USATel 678.947.7350 G. Other Information.
All motors that have been in service for more than 24 hours do not require alteration of the bearing cap.             Any others that have not been placed into service should have the opposite drive end bearing cap replaced with a newly designed cap (603295-74B) to ensure this failure could not occur.
All motors that have been in service for more than 24 hours do notrequire alteration of the bearing cap. Any others that have notbeen placed into service should have the opposite drive endbearing cap replaced with a newly designed cap (603295-74B) toensure this failure could not occur.Sincerely, mre~s Tge~nQuality Assurance  
Sincerely, mre~s Tge~n Quality Assurance Manager, Gainesville Motor Plant Baldor Electric Co.}}
: Manager, Gainesville Motor PlantBaldor Electric Co.}}

Latest revision as of 17:25, 31 October 2019

Letter from James Thigpen Notification of Potential Part 21 Nuclear Nonconformance Event Number 50703
ML15030A033
Person / Time
Site: Susquehanna  Talen Energy icon.png
Issue date: 01/20/2015
From: Thigpen J
Baldor Electric Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
50703
Download: ML15030A033 (4)
v • d • e


Text

Baldor Electric Company

,,I ,I=,P. 0. Box 250, 4349 Avery Drive

..................... _Flowery Branch, GA 30542 USA A MEMBER OF THE ABB GROUP Tel 678.947.7350 January 20, 2015 To: Document Control Desk United States Nuclear Regulatory Commission Washington, DC 20555

Dear Sir or Madam:

In accordance with Title 10, Code of Federal Regulations, Part 21, Baldor Electric is making Written and Final Notification as required by 10CFR21.21 for event #50703.

A. Name and address of the individual informing the NRC.

James Thigpen Quality Assurance Manager Baldor Electric/Gainesville Motor Plant 4349 Avery Drive Flowery Branch, Georgia 30506 B. Identification of Basic Component being Supplied.

AC Motor C. Name of firm supplying basic component.

Baldor Electric/Gainesville Motor Plant 4349 Avery Drive Flowery Branch, Georgia 30542 D. Nature of the defect, deviation, or failure to comply.

Subject:

Nuclear Nonconformance Event Number 50703 This is a reportable 10CFR21 notification because we believe it is possible that the 9 identified lE motors shipped by Baldor Electric, contain a design where the buildup of tolerances between the shaft journal, bearing cap and bracket could potentially allow the bearing cap to cock in the bracket causing a 0.001" interference fit on one side of the cap in a worst case scenario.

..... Baldor Electric Company 9A LID O0 P. 0. Box 250, 4349 Avery Drive Flowery Branch, GA 30542 USA A MEMBER OF THE ABB GROUP Tel 678.947.7350 STEPS TAKEN TO PREVENT FUTURE OCCURRENCES A review was completed by design engineering to determine this design issue has only occurred for the Baldor Specification ID #'s associated with Howden Part Number 600287-28R, *of which Baldor has only shipped the 10 motors identified below of which 9 remain in the customers possession. Baldor has the remaining motor in our possession and it is being replaced with one using the revised design developed as our corrective action response.

Baldor has notified Howden North America Inc. Company's Quality Assurance of our findings. They have in turn contacted their customer, PPL Susquehanna, and determined all 9 motors in their possession have been in service for over 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> with no problems.

The design of the shaft/bearing cap radial clearance has been increased to correct the potential safety issue. Motor Bill of materials for the effected Baldor designs have been revised to call for bearing cap part number 603295-74B on any future shipment.

CONCLUSION The one motor that failed during initial customer testing is in process of being repaired or replaced with the new designed bearing cap.

The revision of the design for Spec. ID's B505968, B656588, B782464, B952117 and B1092454 has been implemented and verified to be correct.

The end user PPL Susquehanna has confirmed to Howden North America Inc. that the remaining 9 motors have been in service for over 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> with no problems, and therefore do not require any alteration to the bearing cap in order to perform their intended use safely.

D. The Discovery Date.

October 29, 2014.

Baldor Electric Company P. 0. Box 250, 4349 Avery Drive Flowery Branch, GA 30542 USA A MEMBER OF THE ABB GROUP Tel 678.947.7350 E. The Quantity and Location of Motors Affected.

PART/COMPONENT NUMBER:

Customer Customer Motor Serial # End User / Location Status Name PO #

Howden 39679 B505968-010 T1 PPL Susquehanna Contacted North 44617 B656588-010 T1 PPL Susquehanna Todd.Gunvalson@Ho America Inc. B656588-010 T1 PPL Susquehanna wden.com and 48105 B782464-010 T1 PPL Susquehanna confirmed all 9 motors B782464-010 T2 PPL Susquehanna have been running in 012747 LIl 1 B952117-010 T1 PPL Susquehanna service for over 24 B952117-010 T2 PPL Susquehanna hours with no B952117-010 T3 PPL Susquehanna problems.

022355 B1092454-010 T1 PPL Susquehanna B1092454-010 T2 Baldor Electric Motor will ship to Howden with new design, new serial number F. The Corrective Action which has been completed.

Baldor has notified Howden North America's Quality Assurance

.of our findings on the motor returned to Baldor for 10CFR21 evaluation. A review was completed by design engineering to determine this failure was due to a collection of events that occurred simultaneously, and if were to happen again, would result in failure within hours of the motor being powered.

Baldor's solution to this worst case scenario is to open the clearances of the shaft bore in the cap up from a 0.008" radial clearance by design, to the maximum 0.012" radial clearance for 1.5" fit length for UL XP standards. This would eliminate any possibility of a rub while the cap is mounted in the cap journal of the bracket. All motors that have been in service for more than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> do not require alteration of the bearing cap. Any others that have not been placed into service should have the opposite drive end bearing cap replaced to ensure this failure will not occur. The corrective action CAR-00451 Howden: Request for 10CFR21 Evaluation for bearing lockdown was completed and closed on 12/23/14.

Baldor initiated corrective action per Baldor CAR-00451 on December 15, 2014 which was completed and received final approval by James Thigpen QA manager Baldor. Final verification of actions will be and verified for effectiveness by 3/23/2015.

Baldor Electric Company P. 0. Box 250, 4349 Avery Drive Flowery Branch, GA 30542 USA Tel 678.947.7350 A MEMBER OF THE ABB GROUP G. Other Information.

All motors that have been in service for more than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> do not require alteration of the bearing cap. Any others that have not been placed into service should have the opposite drive end bearing cap replaced with a newly designed cap (603295-74B) to ensure this failure could not occur.

Sincerely, mre~s Tge~n Quality Assurance Manager, Gainesville Motor Plant Baldor Electric Co.

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